Barbecue grill



FIG. 1 is a top plan view of a barbecue grill showing my new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a left elevation view thereof;

FIG. 4 is a right elevation view thereof;

FIG. 5 is a front elevation view thereof; and,

FIG. 6 is a rear elevation view thereof.

The propane tank shown in broken lines in FIGS. 3-6 is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a barbecue grill, as shown. 